Health check endpoint for GKE ingress

[rowecharles]

GKE ingress configures a load balancer with a health check to the flux-recv port. The requirements for the health check are that a 200 response is returned: https://cloud.google.com/kubernetes-engine/docs/concepts/ingress#health_checks

A Service exposed through an Ingress must respond to health checks from the load balancer. Any container that is the final destination of load-balanced traffic must do one of the following to indicate that it is healthy:

• Serve a response with an HTTP 200 status to GET requests on the / path.
• Configure an HTTP readiness probe. Serve a response with an HTTP 200 status to GET requests on the path specified by the readiness probe. The Service exposed through an Ingress must point to the same container port on which the readiness probe is enabled.

Since the load balancer does not have the webhook secret all response are either 401 or 404s. Can a health check endpoint be added which returns a 200 response.